{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "This study was undertaken to determine the effect of lidocaine pretreatment on reduction of succinylcholine - induced myalgia in patients undergoing general anesthesia for gynecological surgery ."}
{"Chemical": ["lidocaine", "succinylcholine"], "Disease": ["myalgia"]}